EP 1523053 A2 20050413 - Polymer electrolyte membrane fuel cells
Title (en)
Polymer electrolyte membrane fuel cells
Title (de)
Polymerelektrolytmembran-Brennstoffzellen
Title (fr)
Piles à combustible à membrane polymérique comme électrolyte
Publication
Application
Priority
- DK PA199901274 A 19990909
- DK PA199901828 A 19991220
- EP 00958269 A 20000908
Abstract (en)
A method for preparing polybenzimidazole or polybenzimidazole blend membranes and fabricating gas diffusion electrodes and membrane-electrode assemblies is provided for a high temperature polymer electrolyte membrane fuel cell. Blend polymer electrolyte membranes based on PBI and various thermoplastic polymers for high temperature polymer electrolyte fuel cells have also been developed. Miscible blends are used for solution casting of polymer membranes (solid electrolytes). High conductivity and enhanced mechanical strength were obtained for the blend polymer solid electrolytes. With the thermally resistant polymer, e.g., polybenzimidazole or a mixture of polybenzimidazole and other thermoplastics as binder, the carbon-supported noble metal catalyst is tape-cast onto a hydrophobic supporting substrate. When doped with an acid mixture, electrodes are assembled with an acid doped solid electrolyte membrane by hot-press. The fuel cell can operate at temperatures up to at least 200°C with hydrogen-rich fuel containing high ratios of carbon monoxide such as 3 vol% carbon monoxide or more, compared to the carbon monoxide tolerance of 10-20 ppm level for Nafion®-based polymer electrolyte fuel cells.
IPC 1-7
IPC 8 full level
H01M 4/86 (2006.01); H01M 4/88 (2006.01); H01M 4/92 (2006.01); H01M 8/10 (2006.01)
CPC (source: EP US)
H01M 4/8605 (2013.01 - EP US); H01M 4/8668 (2013.01 - EP US); H01M 4/8807 (2013.01 - EP US); H01M 4/8828 (2013.01 - EP US); H01M 4/92 (2013.01 - EP US); H01M 4/926 (2013.01 - EP US); H01M 8/1004 (2013.01 - EP US); H01M 8/1023 (2013.01 - EP US); H01M 8/1027 (2013.01 - EP US); H01M 8/103 (2013.01 - EP US); H01M 8/1032 (2013.01 - EP US); H01M 8/1044 (2013.01 - EP US); H01M 8/1048 (2013.01 - EP US); H01M 2300/0082 (2013.01 - EP US); Y02E 60/50 (2013.01 - EP); Y10T 29/49108 (2015.01 - EP US); Y10T 29/49115 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0118894 A2 20010315; WO 0118894 A3 20010907; AU 6984500 A 20010410; EP 1222707 A2 20020717; EP 1523053 A2 20050413; EP 1523053 A3 20100428; US 6946211 B1 20050920
DOCDB simple family (application)
DK 0000495 W 20000908; AU 6984500 A 20000908; EP 00958269 A 20000908; EP 05075051 A 20000908; US 7055802 A 20020506